276results about How to "Strong alkaline" patented technology

The invention relates to an alkaline molecular sieve catalyst for preparing styrene, which mainly solves the problems that in the prior art, a catalyst has weak alkalescence, a vulnerable structure and poor stability. Through a technical scheme that an alkaline molecular sieve subjected to alkalis exchange is treated by ammonia under the condition of a temperature between 350 and 900 DEG C, the alkaline molecular sieve catalyst wells solves the problem and can be used in industrial preparation of the styrene catalyst through toluene-methanol side chain alkylation.

The invention provides a monocrystal silicon cleaning liquid and a precleaning process. The monocrystal silicon cleaning liquid is characterized by comprising alkali, hydrogen peroxide and water. The precleaning process of the monocrystal silicon cleaning liquid is characterized by comprising the following concrete steps: blending the sodium hydroxide; hydrogen peroxide and water according to a certain proportion to prepare the monocrystal silicon cleaning liquid; heating to 60-80 DEG C; and cleaning the original silicon chips in the monocrystal silicon cleaning liquid. The invention has the advantages of favorable cleaning effect and stability, nonvolatility and lowered production cost.

The invention relates to an ecological diatom ooze decorative wall material, which belongs to the technical field of the research and development of diatom ooze decorative wall materials. The ecological diatom ooze decorative wall material is formed by mixing diatomite, inorganic pigments, calcined zeolite, ethylene vinyl acetate re-dispersible rubber powder, attapulgite powder, tourmaline-loaded nanometer titanium dioxide, polyester fibers, adipic acid dihydrazide and the like. The main functional component of the wall material is the diatomite, and since the diatomite has a porous structure and a heat-insulation and heat-preserving function, the relative humidity of an indoor space can be automatically adjusted to 40 to 70 percent. Anion generated by utilizing the tourmaline-loaded nanometer titanium dioxide has a sterilizing function, so that the harmful gases can be adsorbed and decomposed; the calcined zeolite is used as aggregate and has a porous structure and large specific surface area, and the function for absorbing and releasing the moisture and purifying the air can be improved. The polyester fibers are used as anti-cracking fibers, so that the strength is enhanced, the anti-cracking capacity is improved, and the mildew can be avoided. The calcium perborate is used as a sterilizing agent and is long-acting and toxic-free. By adopting the ecological diatom ooze decorative wall material, the problems of an existing decorative wall material can be solved. A preparation method of the ecological diatom ooze decorative wall material is simple and easy to implement.

The invention relates to a method for producing an acid soil modifier by using agricultural waste. The method comprises: crushing agricultural waste, and heating one part of the crushed agricultural waste in the absence of air to obtain biomass carbon powder; and mixing the biomass carbon powder, the other part of the crushed material, and limestone powder, and uniformly stirring to obtain the finished product. With application of 50-500 kg of the soil modifier on per mu of soil, soil acidity can be effectively reduced, physical and chemical properties of soil can be improved, and economic values of crops can be increased. In addition, the acid soil modifier has characteristics of wide raw material source, low product cost, simple production process, no toxicity and no harm, is a green soil modifier, and has good ecological and social benefits.

The invention relates to a quantum dot optical film of a multi-layer structure. The quantum dot optical film comprises one or more green quantum dot layers, one or more red quantum dot layers, and separating layers or dichroic mirrors, wherein the green quantum dot layers and the red quantum dot layers are alternatively arranged, and the separating layers or dichroic mirrors are arranged between the green quantum dot layers and the red quantum dot layers. The invention further relates to a preparation method and application of the quantum dot optical film.

The invention discloses a dyeing treatment process for pure cotton fabrics based on pure natural biological preparations, which is designed for solving the technical problems that the environment is seriously harmed in an existing pure cotton fabric dyeing treatment process, and the human health is harmed in an application process. The adopted technical scheme is as follows: the dyeing treatment process comprises the steps of singeing, desizing, boiling-out, bleaching, dyeing, softening treatment and preshrinking treatment, and the key point is that biological preparations, which are respectively a desizing enzyme solution, a boiling-out enzyme solution, glucose oxidase solution and a plant dye, are respectively adopted in the steps of desizing, boiling-out, bleaching and dyeing. The dyeing treatment process has the technical effects that the operation is simple; the pure natural biological preparations almost do not contain any toxic substance, and wastewater produced in the treatment process is less and biodegradable, so that under the premise of keeping the characteristics such as softness, sweat absorption, comfortableness and naturalness and the like of pure cotton fabrics, the harm to the environment is alleviated, and the harm to human body is avoided, and therefore, the process has a zero-pollution environmental friendliness characteristic.

The invention discloses a catalyst for production of methanol by CO2 hydrogenation. The invention is intended to overcome the problems of low CO2 conversion ratio and low methanol selectivity in a CO2 hydrogenation methanol synthesis process and studies a catalyst with Cu, ZnO, ZrO2 and graphene oxide (GO) as main components. The content, calculated in mass ratio, namely GO / Cu-ZnO-ZrO2, is (0.04-0.16) / 1, and the catalyst is prepared by adopting a parallel flow coprecipitation method. The preparation process is simple, conditions are easy to control, and repeatability is good. The catalyst disclosed by the invention has the advantages of easily adjustable and variable composition and structure, larger specific surface area, dispersed active components and good catalytic activity. In a CO2 hydrogenation methanol synthesis reaction, the CO2 conversion ratio and methanol selectivity are improved, CO2 emission reduction is achieved, and the catalyst is significant for solving increasingly serious environmental problems.

The invention relates to a kind of Mg-Al hydrotalcite loaded bimetallic nano-catalyst and its preparation method, and relates to application of the catalyst system in oxidation of alcohol into corresponding carbonyl compounds. The catalyst preparation method consists of: 1) preparing an Mg-Al hydrotalcite carrier through a urea decomposition method; 2) loading the precursors of metal Pd and Au on the Mg-Al hydrotalcite surface; and 3) then reducing Pd (II) and Au (III) through NaBH4, thus obtaining the bimetallic nanometer particle catalyst. The catalyst provided in the invention has the advantages of high catalytic activity, good stability, separability, and easy recovery, thus being applicable to alcohol oxidation reactions in aqueous phases.

The invention discloses a residual oil hydrogenation catalyst, comprising a carrier and an active metal component loaded on the carrier, wherein the carrier is a graphited reaming coal material; the specific surface area of the graphited reaming coal material is 200-960m<2> / g, the mean pore size is 10-100nm, the pore volume is 0.3-1.0cm<3> / g, the active metal component comprises one or more of VIII metallic oxides and VIB metal oxides, and the graphited reaming coal material is graphited reaming activated coal or graphited reaming semicoke. The invention also discloses a preparation method of the residual oil hydrogenation catalyst. Firstly, a carbon raw material is graphited and chambered to obtain the required carrier, and then the active component is soaked into the vector to obtain the residual oil hydrogenation catalyst.

The invention relates to a soil amendment, in particular to a facility vegetable land soil amendment using magnesite tailings and a preparation method thereof, which solve the problems of soil acidification, salinization and the like on the facility vegetable land. The soil amendment comprises the following materials in percentage by weight: 90-95% of magnesite powder, 2-5% of lime nitrogen and 2-5% of zeolite powder. The preparation method of the soil amendment comprises the following steps: grinding the magnesite tailings into magnesite powder sieved by a 40-meshed sieve; and mixing the magnesite powder with powdery or granular lime nitrogen and the zeolite powder sieved by a 60-meshed sieve, and stirring fully until evenly blending, thus obtaining the soil amendment. The preparation method of the invention is simple and pollution-free, which can obviously improve the soil acidity and alkalinity environment of the facility vegetable land, and reduce exchangeable sodium saturation of the soil, and meanwhile has the effect of improving physical properties of the soil.

A process of making a polylpeptide or a pharmaceutically acceptable salt thereof comprises reacting a L-lysine protected polypeptide, which comprises L-alanine, L-tyrosine, L-glutamate, and L-lysine that is protected with a protecting group, with a tetraalkylammonium hydroxide in water to remove the protecting group.

The invention provides lithium-ion-battery negative electrode slurry, a preparing method thereof and a preparing method of a negative electrode plate. The lithium-ion-battery negative electrode slurry is prepared from, by weight, 85 parts to 92.5 parts of negative-electrode active substances, 3.5 parts to 6 parts of conductive agents, 4 parts to 9 parts of binding agents and 172 parts to 295 parts of solvents. The negative-electrode active substances are prepared from, by weight, 82.5 parts to 92.2 parts of lithium-titanium composite oxide and 0.26 part to 2.78 parts of acidic compound additives. By means of the lithium-ion-battery negative electrode slurry, the surface performance of material particles is improved, the reaction activation energy and the particle granularity of electrode materials are reduced, and the distribution evenness of particles in the slurry is improved; by means of the preparing method of the negative electrode slurry and the preparing method of the negative electrode plate, the prepared negative electrode slurry is good in dispersity and stability; the prepared negative electrode plate is good in softness and processing performance, the surface density and the adhesive force of the coated negative-electrode active materials are increased, and electrochemical performances such as the battery capacity use ratio and cycling performance are effectively improved.

The invention discloses compositions and methods for generating alkalinity in situ. The compositions and methods relate to the use of a fabric source containing a decomposition agent to catalyze the decomposition of a dilute peroxygen source. The methods provide a highly alkaline cleaning composition produced at a desired time and place of use. Methods of cleaning are also disclosed.

The invention discloses a saline alkali soil conditioning agent. The saline alkali soil conditioning agent comprises, by weight, 9 parts of biological charcoal, 45 parts of calcined phosphogypsum, 20parts of honeycomb briquette ash, 7 parts of modified zeolite, 6.5 parts of expanded perlite, 5.5 parts of humic acid powder, 4 parts of citric acid residue, 3 parts of polysilicate aluminum ferric, 3parts of diatomite, 1 part of a calcium activator, 0.4 part of a composite biological inocula, and 5 parts of an organic composite fertilizer. The saline alkali soil conditioning agent is capable ofimproving saline alkali soil physical and chemical properties effectively, improving time is short, and effect is achieved quickly.

The invention relates to a desulfurizer of organic sulfur (such as carbonyl sulfide, thiol, disulphide and the like) for removing hydrocarbon, in particular for removing hydrocarbon with less than six carbon atoms; the desulfurizer comprises gamma-Al2O3 modified by silicon dioxide, which is used as a carrier and alkali metal oxide used as an active constituent. The desulfurizer has the advantages of high precision for removing organic sulfur, simple preparation process and low cost, and the organic sulfur can be transferred to carbonyl sulfide with above 95% of conversion rate.

The invention discloses an artificial graphite crucible and a preparation method thereof. The artificial graphite crucible is prepared from main raw materials in percentage by weight as follows: 45%-65% of coke, 15%-25% of artificial graphite powder and 20%-30% of high-temperature modified pitch. Firstly, the prepared coke and artificial graphite powder are crushed, and the high-temperature modified pitch is molten into a liquid; the treated raw materials are uniformly mixed and kneaded, and paste is obtained; the paste is cooled and formed, and a raw graphite crucible product is obtained; theraw graphite crucible product is sent to an annular roaster with a cover to be roasted, and a primary roasted product is obtained; the primary roasted product is sent to a high-pressure impregnationtank for pressurized impregnation, and a graphite crucible impregnated product is obtained; the impregnated product is sent to an underbody roaster to be roasted, and a secondary roasted product is obtained; the secondary roasted product is sent to a graphitization furnace for graphitization, and a graphite crucible graphitized product is obtained; finally, conventional machining is performed andthe artificial graphite crucible product is obtained. The prepared artificial graphite crucible has high capacity and good use performance.

The invention discloses a high-performance cross-linked anion membrane and a preparation method thereof. The anion membrane is prepared from polymer containing benzyl halide perssad by means of biguanide or multi-guanidine cross-linking. The membrane can be applied to fuel batteries or energy storage batteries containing acid electrolyte flow. The membrane is compact in structure, low in deformation and moisture content and fine in ion selectivity, and is fine in thermal stability and anti-oxidation stability due to more dispersive distribution of positive charges. In addition, diffusion of vanadium ions in a full-vanadium-flow energy storage battery can be effectively blocked by high alkalinity of the biguanide or multi-guanidine inter-linked anion membrane, simultaneously, swelling can be inhibited by the inter-linked property, diffusion of the vanadium ions further can be inhibited, coulombic efficiency of the battery is increased to reach 99% at least, and high stability, high conductivity and low swelling are realized.

The invention relates to a reproducible polytertiaryamine sulfur dioxide absorbent and a preparation method thereof. The absorbent comprises the following components: (1) polytertiaryamine having a mass concentration in the range from 1% to 80%, which is taken as the major component of the absorbent, wherein the polytertiaryamine exists in a solution in the form of unionized polytertiaryamine, partially ionized quaternary ammonium salt and completely ionized quaternary ammonium salt due to addition of an acid difficult to volatilize; (2) a phenol or quinone material having a mass concentration in the range from 0.01% to 1%, which is used as an antioxidant of the absorbent; (3) 1-50wt% of acid difficult to volatilize, which is used as the cosolvent and stabilizer for the polytertiaryamine; (4) 0.1-10wt% of monoalcohol amine, which is used as an activator of the absorbent; (5) 10-90wt% of water. The absorbent absorbs sulfur dioxide in mixed gases at a low temperature and releases the absorbed sulfur dioxide gas at a high temperature to generate a sulfur dioxide by-product having a dry basis concentration greater than 99%; the absorbent can be recovered and reused.

The invention discloses a saline-alkali soil improver and a preparation method thereof. The saline-alkali soil improver contains the following components in parts by weight: 5-12 parts of bio-carbon,35-55 parts of calcined ardealite, 15-25 parts of honeycomb coal ash, 4-10 parts of modified zeolite, 5-8 parts of expanded perlite, 3-8 parts of humic acid powder, 2-6 parts of citric acid residue, 1-5 parts of poly-aluminum ferric silicate sulfate, 2-4 parts of diatomite, 0.5-1.5 parts of a calcium activating agent, 0.2-0.6 part of a compound biological bacteria agent and 3-7 parts of an organiccompound fertilizer. The saline-alkali soil improver is capable of effectively improving the physicochemical shape of saline-alkali soil within a short time and can take effect rapidly.

The invention discloses a preparation method of an interlayer cesium-enriched delta-MnO2 catalyst. The method comprises the following steps:(1) thoroughly mixing and dissolving soluble manganese salts and soluble hydrogencarbonate in an alcohol solution, performing a solvent thermal reaction, and performing washing and drying so as to obtain precursor manganese carbonate microspheres; and (2) mixing the precursor manganese carbonate microspheres with cesium salt, and performing roasting under the condition of warming in the air, so as to obtain the interlayer cesium-enriched delta-MnO2 catalyst. The raw materials for the preparation method are cheap and easy to obtain, the synthesis technology is simple and feasible, the preparation cost is low, the product quality is stable, and the technology is high in repeatability. The prepared interlayer cesium-enriched delta-MnO2 catalyst has favorable catalytic activity when being used for catalysing toluene combustion.

The invention discloses a method for reducing total organic carbon content of zeolite molecular sieve production wastewater by one-step illumination technique. The method is characterized in that hydrogen peroxide is added into zeolite molecular sieve production wastewater to generate hydroxyl free radicals with superstrong oxidizing ability under ultraviolet irradiation so as to conduct oxidative degradation on the organic nitrogen-containing compound in the zeolite molecular sieve production wastewater, and the organic nitrogen-containing compound is one or more of a quaternary ammonium salt, quaternary ammonium base, and organic amine. Compared with traditional methods, the method provided by the invention simplifies the treatment process, saves the treatment time, and is easy to operate. For wastewater containing quaternary amine base and organic amine, the method provided by the invention can directly treat the wastewater without adding acid to conduct neutralization, and the treated water sample is close to neutral.

The invention relates to an alkaline organic fertilizer prepared from humic acid, manioc vinasse, magnesium oxide and plant ash, and a production method thereof, belonging to the technical field of production of organic fertilizers. The alkaline organic fertilizer comprises 1 part of humic acid of which the organic content is 70-80%, and 0.5-2 parts of 30-50% plant ash of which the pH value is 10-11.5; or 1 part of humic acid, 0.5-0.8 part of manioc vinasse, 0.1-0.3 part of magnesium oxide and 0.8-1.2 parts of plant ash. The production method comprises the following steps: (1) respectively taking humic acid, manioc vinasse, magnesium oxide and plant ash according to parts by weight, and evenly mixing in a mixer to obtain a powder alkaline organic fertilizer; and (2) sending the mixture of humic acid, manioc vinasse, magnesium oxide and plant ash which are proportionally and evenly mixed, into a roller granulator, and granulating to obtain the granular organic fertilizer. The invention has the advantages of scientific and reasonable material proportioning, and simple technique; and the alkaline organic fertilizer can be independently applied, or applied after being mixed with a compound fertilizer, and can effectively inhibit and prevent soil acidification.

The invention discloses a method for reducing the chemical oxygen demand of zeolite molecular sieve production wastewater by one-step illumination technique. The method is characterized in that hydrogen peroxide is added into zeolite molecular sieve production wastewater to generate hydroxyl free radicals with superstrong oxidizing ability under ultraviolet irradiation so as to conduct oxidative degradation on the organic nitrogen-containing compound in the zeolite molecular sieve production wastewater, and the organic nitrogen-containing compound is one or more of a quaternary ammonium salt, quaternary ammonium base, and organic amine. Compared with traditional methods, the method provided by the invention simplifies the treatment process, saves the treatment time, and is easy to operate. For wastewater containing quaternary amine base and organic amine, the method provided by the invention can directly treat the wastewater without adding acid to conduct neutralization, and the treated water sample is close to neutral.

The invention discloses a method for preparing a brominated-polyphenylene-ether-guanidination-based homogeneous anion exchange membrane. The method is characterized by comprising the following steps of: dissolving bromomethylated poly(2,6-dimethyl 1,4-phenylene oxide), namely brominated polyphenylene ether of which the degree of methyl bromination is 5 to 100 percent into an organic solvent, adding organic micromolecules 1,1,2,3,3-pentamethyl substituent carbamidine in a molar weight which is 0.5 to 10 times that of bromine methyl groups contained in the brominated polyphenylene ether, stirring the solution at the temperature of between 0 and 100 DEG C, reacting for 6 to 48 hours, directly coating casting film solution on the matrix or coating the casting film on reinforced fabrics, and removing the solvent to obtain the anion exchange membrane. In the method, the properties of the anion exchange membrane are controlled by controlling the degree of substitution of the bromine methyl groups of the brominated polyphenylene, so that the homogeneous anion exchange membrane having the advantages of proper water content, high ion exchange content, high thermal stability and mechanical strength and excellent OH-conductivity and alkali resistance can be selected.

The invention provides a method for adjusting the pH value of a secondary circuit of a nuclear power plant. The technical scheme is that: an ethanolamine solution is taken as a pH value adjusting agent; and the pH value of condensate is adjusted to 9.20-9.30 at the temperature of 25 DEG C before the condensate enters a subsequent secondary circuit moisture cycle. Due to the adoption of the method, the pH value of a liquid phase of a gas-liquid two-phase position is increased, a corrosion product of liquid-phase area equipment in gas and liquid phases is reduced, the corrosion state of a secondary circuit system is improved, the transfer amount of a water supply system corrosion product to the secondary side of a stream generator is reduced, the depositing probability of the corrosion product inside the stream generator is lowered, and the service life of the steam generator is prolonged; and moreover, the periodical water output of a water condensing mixed bed of a condensate precise treating device is increased, the regenerating times of the water condensing mixed bed, the using amounts of regenerated acids and alkalis and the water consumption are reduced, the workload of running personnel is relieved, and the discharge of a regenerated water liquid into the environment is reduced.

The invention relates to mineral admixture concrete and a preparation method thereof and belongs to the field of building materials. The preparation method is characterized in that a composite solid exciting agent is utilized to excite potential activity of a mineral admixture and produces a synergistic effect with common cement so that the mineral admixture concrete having strength of C30-C70 and excellent durability such as anti-permeability and frost-resistance and allowing normal setting time is obtained. The composite solid exciting agent can greatly improve the strength and the durability of the mineral admixture concrete. Through replacement of 90 to 95% of cement with a large amount of an industrial waste residue-slag powder-fly ash admixture, a production cost is reduced obviously. The mineral admixture of a cementing agent, a sand aggregate and the composite solid exciting agent is pre-stirred and then is added with mixing water so that the composite solid exciting agent is dispersed uniformly and after addition of the mixing water, the mineral admixture can be fully excited. In construction, the mineral admixture concrete has good workability and no ropiness, can be operated easily, has high strength after setting and hardening, good durability and a low cost, and can be used in various engineering construction and concrete products.

The invention relates to a normal temperature cured super weather-resistant and wear-resistant high-hardness water-based inorganic nanoceramic coating and a preparation method thereof. The inorganic nanoceramic coating comprises a water-based inorganic nanoceramic coating, water-based organosilicon dispersion liquid and water, wherein the water-based inorganic nanoceramic coating comprises the following raw materials: a water-based inorganic nanoceramic emulsion, a pigment, a filler, a wetting dispersing agent, a non-stick leveling agent, a thickening agent and water; the water-based inorganicnanoceramic emulsion comprises silica sol, silane, a surfactant and water; and the water-based organosilicon dispersion liquid comprise amino silane, a surfactant and water. The preparation method comprises a step of uniformly mixing the water-based inorganic nanoceramic coating and the water-based organosilicon dispersion liquid in weight ratio of (1-4):1, thereby obtaining the normal temperature cured super weather-resistant and wear-resistant high-hardness water-based inorganic nanoceramic coating. The coating product provided by the invention can be diluted with any water and stored stably for 1 year or longer, and has the characteristics of high hardness, high wear resistance, high weather resistance, normal temperature curing and the like.

The invention discloses a method for preparing hydrogen by using an improved silica-alkali method, and belongs to the technical field of on-line hydrogen preparation. The preparation method comprises the steps that silicon iron alkali composite powder and potassium hydroxide are mixed in the mass ratio of (1-1.2):(0.5-15), and then added into an aqueous reaction medium with the mass being (1-30) times of the mass of the mixture, a reaction is conducted at the temperature of 25-70 DEG C, and the hydrogen is prepared, wherein the silicon iron alkali composite powder comprises silicon-iron alloy. According to the method, the process is simple and easy to control, the hydrogen yield can be improved, and the hydrogen preparation cost can be reduced.